Trusted Sources

Google Knowledge Graph: Entity isReference Domains

Dataset: 62,202 isReference domains | entities

Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.

The Google leak in May 2024 confirmed that Google explicitly associates people with their profile pages (isReference) and articles they have written (isAuthor).

⚠️ You Can't Use Just ANY Domain!

Out of 1,738,093 domains we monitor, only 62,202 qualify as isReference domains.

3.65%

Only 3.65% of domains earn isReference status from Google. Domain selection is critical.

Key concepts:

Wikipedia is NOT Required (or even your best bet)

Wikipedia: 6 million entities
Kalicube Pro: 71 million entities
Knowledge Graph: 50 billion entities

0.012%

Wikipedia covers only 0.012% of the Knowledge Graph. If your entity isn't in that 0.012%, you need to build a Knowledge Panel with ~30 isReference url instead.

📊 Kalicube's Entity Validation Dataset

1,738,093
Domains Checked Regularly
62,202
isReference Domains
3.58% qualify
23,295,240
URLs Monitored
70,589,021
Entities Tracked

💡 Even Small Niche Domains Have isReference Authority

Examples from our dataset (December 2025):

kalicube.com 21 entities
searchengineland.com 11 entities
jasonbarnard.com 86 entities
searchenginejournal.com 270 entities
entrepreneur.com 1,292 entities
forbes.com 2,823 entities

Your niche-specific domains may have similar authority in your category.

Top 100 isReference Domains for All Entity Types

Rank Domain Entity Count
1 wikipedia.org 2,974,697
2 linkedin.com 386,995
3 twitter.com 366,112
4 amazon.com 152,911
5 instagram.com 136,756
6 facebook.com 113,114
7 x.com 110,197
8 allocine.fr 102,375
9 deezer.com 56,502
10 youtube.com 43,388
11 namu.wiki 42,467
12 google.com 38,232
13 wiktionary.org 29,929
14 legacy.com 27,148
15 isfdb.org 25,390
16 britannica.com 22,892
17 trustpilot.com 19,849
18 reddit.com 19,778
19 yahoo.com 19,139
20 gutenberg.org 16,674
21 dictionary.com 15,992
22 fandom.com 13,481
23 crunchbase.com 12,616
24 tiktok.com 10,935
25 microsoft.com 10,817
26 rottentomatoes.com 10,006
27 metacritic.com 9,188
28 uk.com 8,533
29 letterboxd.com 8,092
30 espn.com 7,525
31 apple.com 7,443
32 justwatch.com 7,165
33 wikiquote.org 7,138
34 github.com 6,395
35 indeed.com 6,297
36 wikiwand.com 6,244
37 history.com 6,093
38 quora.com 5,937
39 fifa.com 5,612
40 webuy.com 5,581
41 spotify.com 5,372
42 wikia.com 5,249
43 netflix.com 5,211
44 bbc.co.uk 5,041
45 mit.edu 4,997
46 imdb.com 4,880
47 reuters.com 4,743
48 forbes.com 4,693
49 pinterest.com 4,561
50 billboard.com 4,532
51 plus.lefigaro.fr 4,526
52 premiere.fr 4,494
53 shopee.co.id 4,477
54 hotels.com 4,473
55 cambridge.org 4,437
56 soundcloud.com 4,368
57 theguardian.com 4,366
58 vikidia.org 4,303
59 vocabulary.com 4,292
60 shopee.ph 4,190
61 bloomberg.com 3,947
62 thesaurus.com 3,838
63 ign.com 3,822
64 linkedin.cn 3,737
65 google.com.br 3,724
66 famousbirthdays.com 3,715
67 ca.gov 3,684
68 nhl.com 3,640
69 bbc.com 3,600
70 dell.com 3,554
71 pornhub.com 3,510
72 nih.gov 3,427
73 playstation.com 3,414
74 genius.com 3,226
75 hbomax.com 3,209
76 house.gov 3,119
77 independent.co.uk 3,034
78 last.fm 2,996
79 time.is 2,958
80 go.com 2,952
81 bio-on.it 2,917
82 nasa.gov 2,886
83 rateyourmusic.com 2,736
84 radiofrance.fr 2,651
85 meta.com 2,638
86 search.google 2,628
87 coach.com 2,607
88 a-artist.com 2,539
89 inc.com 2,518
90 bing.com 2,524
91 discovery.ca 2,526
92 itv.com 2,502
93 france24.com 2,464
94 amazon.fr 2,381
95 wikisource.org 2,373
96 chess.com 2,316
97 investing.com 2,308
98 washington.edu 2,271
99 nytimes.com 2,260
100 notrecinema.com 2,247
101+ 62,102 additional niche-specific domains in full dataset covering 65,500,783 additional entities

Why This Data Matters

Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.

Entity Validation at Scale

Google's Knowledge Graph requires consistent entity recognition across validated domains.

  • Only 3.65% of domains (62202 out of 1738093) qualify as isReference
  • Brands typically need ~30 entity-validated url for a stable Knowledge Panel
  • Each niche has unique entity authority patterns
  • Generic "authority lists" miss 95%+ of niche-specific opportunities

⚠️ This Free List is Intentionally Limited

The top 100 domains shown above are dominated by massive generalist sites. For 99% of brands, the real opportunities lie in the niche-specific domains that only appear in our full platform dataset.

Recommended Reading:

🔐 Find YOUR Niche-Specific isReference Domains

We monitor 23M+ URLs across 1.7M domains to identify the exclusive 3.65% that qualify as isReference domains for 72M+ entities. The Kalicube Pro platform maps your competitive landscape and identifies your niche-specific opportunities in 15 minutes.

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